Volume 4 Appendix HA Flora Assessment
Total Page:16
File Type:pdf, Size:1020Kb
WILPINJONG COAL PROJECT APPENDIX HA Flora Assessment Wilpinjong Coal Project APPENDIX HA WILPINJONG COAL PROJECT FLORA ASSESSMENT PREPARED BY FLORASEARCH MARCH 2005 Document No. APPENDIX HA-Q.DOC Wilpinjong Coal Project TABLE OF CONTENTS Section Page HA1 INTRODUCTION HA-1 HA1.1 SURVEY OBJECTIVES HA-1 HA1.2 REGIONAL SETTING HA-1 HA1.3 DESCRIPTION OF THE STUDY AREA AND SURROUNDS HA-1 HA1.3.1 Topography and Drainage HA-1 HA1.3.2 Geology and Soils HA-5 HA1.3.3 Climate HA-5 HA1.3.4 Landuse HA-6 HA1.4 BOTANICAL/BIOGEOGRAPHICAL REGIONS HA-6 HA1.5 PREVIOUS VEGETATION STUDIES HA-7 HA1.6 CONSERVATION STATUS OF THE REGIONAL FLORA HA-7 HA1.6.1 Conservation Reserves HA-7 HA1.6.2 Threatened Vegetation Communities, Populations and Species HA-7 HA2 METHODS HA-8 HA2.1 VEGETATION SAMPLING HA-8 HA2.1.1 Quadrat Sampling HA-8 HA2.1.2 Spot Sampling HA-12 HA2.2 VEGETATION MAPPING HA-12 HA2.2.1 General Mapping HA-12 HA2.2.2 Threatened Community Mapping HA-12 HA2.3 SPECIES LISTING HA-13 HA2.4 ASSESSMENT OF VEGETATION CONDITION HA-13 HA3 RESULTS HA-13 HA3.1 VEGETATION COMMUNITIES HA-13 HA3.1.1 Community 1 - Yellow Box and Blakely’s Red Gum Woodlands HA-13 HA3.1.2 Community 2 - Coast Grey Box Woodlands HA-17 HA3.1.3 Community 3 - Rough-barked Apple Woodlands HA-18 HA3.1.4 Community 4 – Narrow-leaved Ironbark Forest HA-19 HA3.1.5 Community 5 - White Box Woodlands HA-20 HA3.1.5.1 Community 5a - Grassy White Box Woodlands HA-20 HA3.1.5.2 Community 5b - Shrubby White Box Woodlands HA-21 HA3.1.6 Community 6 - Sandstone Range Shrubby Woodlands HA-21 HA3.1.7 Community 7 - Cleared Agricultural Land HA-23 HA3.1.8 Community 8 - Secondary Shrubland HA-24 HA3.2 FLORA SPECIES HA-24 HA3.3 THREATENED FLORA SPECIES HA-25 HA3.4 REGIONALLY SIGNIFICANT SPECIES HA-25 HA3.5 CONDITION OF THE VEGETATION HA-25 HA3.6 NOXIOUS WEEDS HA-28 HA4 DISCUSSION HA-28 HA4.1 THREATENED PLANT COMMUNITIES HA-28 HA4.2 BIOGEOGRAPHY OF THE STUDY AREA HA-28 HA4.3 VEGETATION MAPPING HA-29 HA5 SUMMARY AND CONCLUSIONS HA-29 HA6 REFERENCES HA-30 FloraSearch HA-i Flora Assessment Wilpinjong Coal Project LIST OF TABLES Table HA-1 Threatened Plant Species Targeted by the Study Table HA-2 Modified Braun-Blanquet Cover Abundance Rating Scale Table HA-3 Vegetation Communities Identified within the Study Area Table HA-4 Numbers and Percentages of Native and Introduced Vascular Plant Taxa Identified in the Vegetation Communities on the Study Area Table HA-5 Condition of Vegetation Remnants within the Study Area LIST OF FIGURES Figure HA-1 Regional Location Figure HA-2 Project Location Figure HA-3 Project General Arrangement Figure HA-4 Flora Sample Sites Figure HA-5 Vegetation Communities within the Study Area LIST OF ATTACHMENTS Attachment HA-A Flora Species List for the Study Area FloraSearch HA-ii Flora Assessment Wilpinjong Coal Project HA1 INTRODUCTION FloraSearch was commissioned to conduct a flora assessment for the Wilpinjong Coal Project (the Project), located in the New South Wales (NSW) Western Coalfield approximately 11 kilometres (km) south-east of the Ulan Coal Mines and approximately 40 km north-east of Mudgee (Figures HA-1 and HA-2). The Project general arrangement is shown on Figure HA-3. A detailed description of the Project is provided in Section 2, Volume 1, of the Project Environmental Impact Statement (EIS). HA1.1 SURVEY OBJECTIVES The objectives of the survey were to: • determine and map the vegetation communities present within the study area; • compile a comprehensive plant species list for each vegetation community; • develop a list of threatened plant species that could potentially occur in the study area or surrounds; • conduct targeted searches for threatened plant species and communities listed in the schedules of the NSW Threatened Species Conservation Act, 1995 and Commonwealth Environment Protection and Biodiversity Conservation Act, 1999, and map any occurrences; • assess the condition of the vegetation; and • report on the findings of the flora surveys. HA1.2 REGIONAL SETTING The study area is located approximately 40 km north-east of Mudgee and 4 km west of Wollar in a valley between Goulburn River National Park and Munghorn Gap Nature Reserve (Figures HA-1 and HA-2). The study area is situated in the west of the upper reaches of the Hunter Valley Catchment and near the Great Dividing Range at its lowest point in NSW. The Hunter River Catchment drains some 22,000 square kilometres of central eastern NSW to the Pacific Ocean at Newcastle. The study area is located within the Greater Wollar Catchment adjacent to Wilpinjong Creek (Figure HA-2). Wilpinjong Creek flows into Wollar Creek approximately 4 km downstream of the confluence of Cumbo and Wilpinjong Creeks. Wollar Creek flows into the Goulburn River approximately 8 km to the north of the Wollar Creek and Wilpinjong Creek confluence which, in turn, flows to the east of the study area to the Hunter River. Geologically, Wilpinjong lies near the north-western extremity of the Sydney Basin comprising mainly Permian and Triassic sediments. The Permian sediments contain the coal measures which form the basis of the Hunter Valley coal industry and also comprise sandstone, conglomerate, coal, tuff and some older basalt. They are overlain in the study area by the harder Triassic sandstones of the Narrabeen Group that form the rugged ranges and plateaux of the Goulburn River National Park, Munghorn Gap Nature Reserve and other sandstone-capped ranges in and around the study area. The broad valley floor of the study area has developed in the softer Permian sediments. By contrast, the Narrabeen sandstone areas resist erosion forming narrow valleys and gorges with much shallower soils. HA1.3 DESCRIPTION OF THE STUDY AREA AND SURROUNDS HA1.3.1 Topography and Drainage The majority of the study area comprises flat to gently undulating terrain with a few higher hills (Figure HA-3). The valley flats are bordered by, and penetrate between, steep sandstone ranges; the change in gradient from the valley floor to the ranges is usually quite sharp. Long narrow valleys may penetrate between sandstone ranges (Figure HA-3). FloraSearch HA-1 Flora Assessment Mooki NEW Sydney Basin River Lake RAILWAY SOUTH PROJECT Keepit LOCATION Apsley River Mudgee MAIN NORTHERN WALES Newcastle Western Coalfield Sydney MUNGINDI TAMWORTH Peel Coxs River Lake Goran VICTORIA RAILWAY Melbourne River Nowendoc MAIN RANGE NORTHERN DIVIDING River BINNAWAY RAILWAY GREAT River CREEK Barnard - WERRIS RAILWAY Coolah Tops River National Mooki Park Manning Towarri River RAILWAY National River River River Park murra River Talbragar COOLAH RAILWAY Cassilis Hunter CRABOON Mun Barrington Tops Scone National Park COAST Krui GOLDEN Lake Williams GREAT Merriwa NEW Glenbawn NORTH Goulburn Manobalai Karuah Nature Reserve Ulan Muswellbrook Goulburn River National Park Sandy RAILWAY River GULGONG River Hollow Project Location - MERRIWA Lake SANDY Munghorn Gap ENGLAND River Gulgong Wollar Bylong RAILWAY Liddell Cudgegong Nature Reserve HOLLOW Blackwater Denman HIGHWAY DIVIDING Growee Hunter Wollemi SINGLETON National Park WALLERAWANG RANGE MAIN River Mudgee River Wollemi HIGHWAY HIGHWAY CASTLEREAGHRiver River National Park Avisford NORTHERN Nature GWABEGAR MAITLAND RA Reserve I L WAY PACIFIC Road RAILWAY Rylstone MAITLAND Macdonald Wollemi Putty RAILWAY RAILWAY NEWCASTLE National Park FREEWAY HIGHWAY NORTHERN Caperttee Yengo Turon National MAIN Macquarie River Park River Lake Gardens Of Stone Macquarie National Park NEWCASTLE Colo River Tuggerah River Winburndale River SYDNEY Lake BATHURST Nature Reserve GREAT WESTERN Blue Mountains GOSFORD Lithgow National Park RAILWAY WESTERN MAIN HIGHWAY Broken Bay Nepean RICH MOND RANGE RAILWAY HIGHWAY PACIFIC MAIN Campbells WESTERN RAILWAY Port Jackson SOUTH River DIVIDINGKanangra-Boyd SYDNEY National Park River Abercrombie Blue Mountains HIGHWAY PACIFIC OCEAN National Park Lake Abercrombie River RAILWAY Burragorang Royal National Park GREAT RAILWAY National Park River Nattai COAST River National Park SOUTH 0 10 50 HUME SOUTHERN Kilometres WOLLONGONG RAILWAY WILPINJONG COAL PROJECT EIS VALE UNANDERRA - Lake Illawarra MOSS FIGURE HA-1 MAIN Regional Location FloraSearch Wollondilly WIL-04-01 Flora _003E Creek RIVER 780 000E 760 000E 740 000E RIVER Creek Mile GAR 6 460 000N RIVER 6 460 000N TALBRA COOLABURRAGUNDY Turee RAILWAY MUNMURRA COOLAH RAILWAY Four COOLAH Creek Cassilis GOLDEN TURILL Uarbry STATE FOREST HIGHWAY TALBRAGAR GOLDEN MUNMURRA HIGHWAY Cainbil RIVER Road Creek RIVER Turil CURRYALL DURRIDGERE Cockabutta STATE STATE KRUI 6 440 000N FOREST FOREST 6 440 000N GREAT MERRIWA Ulan - Cassilis RIVER Slapdash Murrumbline Creek DIVIDING MUNMURRA STATE FOREST GOULBURN MUNMURRA RIVER STATE Ulan FOREST Road RIVER RANGE Creek GOULBURN Road Ulan Coal COPE Creek GOULBURN RIVER STATE Mines Creek NATIONAL PARK COPE FOREST Ulan Wilpinjong STATE Ulan - Wollara/Ringwood Merotherie FOREST Road Wollar Creek Murragamba Cope Creek GOULBURN Wilpinjong Wialdra Wollar 6 420 000N Creek GULGONG - SANDY HOLLOW RAILWAY GOULBURN RIVER 6 420 000N Moolarben Creek MLA1 NATIONAL PARK GULGONG - SANDY HOLLOW RAILWAY Project Location Road SANDY HOLLOW RIVER MUNGHORN Cooyal Wollar GAP Wollar - Bylong GULGONG NATURE BYLONG RESERVE Wollar Road Creek Creek Road HIGHWAY Home Rule Bylong Creek MUNGHORN GAP Cumbo NATURE RESERVE Barigan Lindburn Road RIVER Barigan CASTLEREAGH Road Cooyal Creek RIVER Stoney Cooyal Wollar Creek Bylong Valley Way Creek Creek Ulan CUDGEGONG Road Drive 6 400 000N Botobolar 6 400 000N Creek Budgee Creek GREAT Lawson Budgee Road Clay Lee RIVER Pipe DIVIDING